TSM9118EXK+

Overview

The TSM9118EXK+ is a nanopower analog comparator from the TSM9117-TSM9120 family, manufactured by Silicon Labs. It features an internal 1.252V ±1.75% voltage reference and an open-drain output stage. The device guarantees operation down to +1.6V with a typical supply current of 600nA at 1.6V. Input voltages extend 200mV beyond the rails without phase reversal. Key electrical parameters include a maximum input offset voltage of 5mV, 4mV internal hysteresis, and a propagation delay of up to 45µs at 5V. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Includes an integrated 1.252V voltage reference for threshold applications
• Open-drain output stage facilitates wired-OR logic and level translation
• Robust input stage tolerates voltages 200mV outside the supply rails
• Internal hysteresis ensures clean switching behavior

Applications

• Two-cell battery monitoring and management systems
• Medical instruments requiring low power consumption
• Threshold detectors and discriminators
• Sensing circuits connected to ground or supply lines
• Ultra-low-power mobile communications and telemetry systems

Procurement Notes

Verify component authenticity through authorized channels as this part may be subject to obsolescence notices. Confirm that the specific ordering suffix matches the required tape and reel packaging format. Ensure compatibility with existing design specifications regarding the open-drain output configuration and internal reference voltage accuracy before finalizing procurement orders.

Selection Notes

Select the TSM9118EXK+ when an internal voltage reference is required alongside an open-drain output interface. This model is suitable for designs needing rail-to-rail input tolerance and ultra-low quiescent current. Consider alternative models like the TSM9117 if a push-pull output is preferred instead of the open-drain configuration provided by this specific variant.

Part Context

This component belongs to the TSM9117-TSM9120 series of nanopower comparators. These devices are electrically and form-factor identical to the MAX9117-MAX9120 family. The series offers various combinations of internal references and output types, packaged in 5-pin SC70 or 8-pin SOIC formats to support diverse low-voltage system requirements.

Replacement Considerations

Public confirmed substitute part numbers include MAX9118.